Egg candling device



Nov. 6, 1945. J, occg-u 2,388,518

EGG CANDLING DEVICE Filed May 50, 1944 INVENTOR Joseph JEa/acch/ATTORNEY Patented Nov. 6, 1945 UNITED STATES PATENT OFFICE EGG(AJANDLING DEVICE ma eam sail Francisco, Calif. A plication May 30,1944, Serial No. 538,043 gioiaim. (o1. 88- -1432).

This invention relates to improvements in egg candling devices. r

It is in general the broad object of the present invention to provide anew, improved eggcandling device in which maximum utilization of lightderived from alight source issecured'.

Another object of the present invention is to provide an egg candling'device including a reflector'in combination with means for ventilatingthe casing of the device so that moisture, dust and other foreign matterdoes not collect upon nor mar the surface of the reflector.

A further object of the present invention is to provide a simple andinexpensive egg candling structure which is readily manufactured ofstandard parts, has a low operating cost, and can be easily maintained.

The invention includes other objects and features of advantage some ofwhich, together with the foregoing, will appear hereinafter wherein thepresent preferred form of device is disclosed.

In the drawing accompanying and forming a part hereof, Figure 1 is aside elevation, partly in section, taken along the line l-| in Figure 2.Figure 2 is a view taken along the line 2--2 in Figure l.

Figure 3 is a front view of the device shown in Figure l.

The device of the present invention includes an outer casing 3,generally made of sheet metal, in the form of a rectangle and havingsides 4, 5, and I, a top 8, and an open bottom defined by a flange 9. Anauxiliary cover or casing H is mounted upon side 4, to which it issecured by screws I2. An incandescent lamp socket generally indicated atI4 is mounted upon top 8 of the casing. The socket is formed of twoportions, an upper portion l5 and a lower portion I6, the two beingseparable to permit the socket to be installed, portion l6 beingthereafter secured in place to retain the socket rotatably upon the top8.

An incandescent lamp generally indicated at I! is secured in the socket,the lamp having a screw type base 18 from which a central support l9extends together with support wires 2|. A filament 22 is extendedbetween the wires in a substantially straight line at right angles to.the longitudinal axis of the lamp to provide a source of light.

v A lens 23 is mounted over an aperture 24 in side wall 4 and isretained in place by a rim 26 formed on the side wall. The lens ispositioned at right angles to the extended longitudinal axis of thestraight line filament 22 when the lamp is positioned as'shown inFigure 1. Cover ll includes an aperture therein 'to permit emission oflight passing through the lens from the light source, this aperturebeing covered by a rubber ring 21, retained in place about the aperturein the cover byits own resilience and its fit in the aperture.

To ensure-maximum light emission, a reflector 3| is provided on amovablemounting generally extending through a threaded ball 34 which isindicated at 32 and including a threaded rod 33 rotatably mounted in anaperture in wall 5. The screw mounting enables the reflector to beadvanced toward and away from the light source, a lock nut 35 enablingthe reflector to be secured in a desired adjustment. To secure thereflector in the desired rotated position, a lock device generallyindicated at 38 is provided. This includes a ring 39 surrounding theball 34, a screw 4| and a wing nut 42, the screw being secured to thecasing so that when the wing nut is tightened the ring 39 rocks aboutits extension 43 which bears against the casing thus forcing the ring 39to engage and hold the ball firmly in an adjusted position.

The. position of the reflector with respect to the light source can bevaried. Because incandescent lamps are not uniform, the distance betweenthe filament 22 and the base varying, I provide means enabling theposition of the reflector to be adjusted to secure maximum lightemission. In Figure 1, I have shown the reflector as positioned slightlybelow the filament 22 and below the central point of the lens. The threecan be placed in alignment, that is, the central point of the lens, thefilament, and the axis of the reflector can be placed on a line, ifdesired. However, the construction shown is satisfactory and permitsready adjustment because the reflector can be rocked about its supportto accommodate the various lamps found commercially.

In operation, a lamp is inserted into the socket and is turned so thatits filament is at right angles to the inside face of lens 23. Then thereflector is moved toward or away from the filament and is rocked intothat position giving the maximum light emission, this being suitablymeasured as on a photometer 'or light meter. In practice, the device issuitably supported in the position in which it appears in Figure 1. Byplacing a translucent sheet of glass at 46 and supporting this onflanges 9, a suflicient light transmission can be secured so that anoperator has sufficient light to pick up the eggs to b candled.

The casing 3 includes louvers 41 along each lower edge of sides 6 and Iand an exit louver 48 in top 8 to permit air to circulate freely throughthe casing so that moisture and dirt do not collect on the reflector,being carried out by the air passing through the casing due to the heatof the lamp. An aperture 49 is also provided in wall 4 between thecasing and cover H to permit air circulation.

In candling white eggs, the natural light from the lamp sufiices. Incandling brown eggs, light of another color enables the operator tojudge the egg more accurately. To facilitate this, a suitable filteringdevice indicated generally at is mounted on screw 52. This deviceincludes a suitable green colored filter which can be selectively movedinto position overthe aperture by rod 53.

From the foregoing I believe it will be apparent that I have provided anew, novel, simpl and eflicient egg candling device which can be read-.ily adjusted to permit of ready candling of eggs with maximum lightutilization.

I claim:

An egg eandling device comprising a casing having a top, sides andbottom, louvers in the sides and top of said casing to permit aircirculation through said casing, a lamp, means supporting said lamp fromthe top of the casing, said tor for rotation about the lamp, anauxiliary casing mounted exteriorly of said casing on one side thereofand having an aperture therein to permil; a beam of light from said lensto pass therethrougha ring of resilient material fitted in said aperturefor receiving an egg to be candled, a light filter, means mounting saidfilter within said auxiliary casing for movement between a firstposition in which said filter is interposed in the path of said beambetween said auxiliary casing aperture and said lens and a secondposition in which said filter is disposed out of said light beam butwithin said auxiliary casing, and means extending through said auxiliarycasing for moving said filter between said positions.

JOSEPH J. BAIOCCHI.

